How would I type the command to use the boost? Also, how would I add other sticks to the command?
With latest version you do not need to type a command to use the boost. It is always on.
You only need to type a command when the boost is not needed.
Miners are hotplug, so they will add automatically in cgminer. Just plug into a USB port and it will start mining (of course your setup has to be right, depending on the number of miners).